Add all 256 shuffle methods to Float32x4

Add all 256 shuffle methods to Float32x4

R=srdjan@google.com

Committed: https://code.google.com/p/dart/source/detail?r=25227

[Cutch, 2013-07-19 00:01:58]

PTAL.

It's almost ready to land (I need to implement X64 and add some tests).

Zach- how will this impact your NEON work?

[Cutch, 2013-07-19 00:10:56]

Patch Set 2 is ready for review for landing.

[zra, 2013-07-19 00:31:25]

On 2013/07/19 00:01:58, Cutch wrote:
> PTAL.
> 
> It's almost ready to land (I need to implement X64 and add some tests).
> 
> Zach- how will this impact your NEON work?

Should be okay. I'll just need to translate the word indexes in the map into
byte indexes. I'll probably also have special cases for XXXX, YYYY, ZZZZ, and
WWWW, because there is a shorter sequence on ARM using the vdup instruction.

[srdjan, 2013-07-19 16:39:10]

lgtm

[Cutch, 2013-07-19 17:03:17]

Committed patchset #4 manually as r25227 (presubmit successful).

[siva, 2013-07-26 01:07:23]

https://codereview.chromium.org/19564014/diff/8001/runtime/lib/typed_data.dart
File runtime/lib/typed_data.dart (right):

https://codereview.chromium.org/19564014/diff/8001/runtime/lib/typed_data.dar...
runtime/lib/typed_data.dart:2264: Float32x4 get wwww => _shuffle(0xFF);
John,

One quick question instead of having individual getters like
this xxxx, xxxy etc. would it be ok to have one generic getter
that takes a constant as a parameter
e.g:
<somename>(int attribute) and we define constants XXXX, XXXY etc.
so uses would do <somename>(XXXX) instead of xxxx.

Would that be very unreadable in the code?